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import importlib
import os

import matplotlib
import pytest

matplotlib.use("Agg")

plot = importlib.import_module("compressai.utils.plot.__main__")


@pytest.mark.parametrize("metric", ("psnr", "psnr-rgb", "ms-ssim-rgb"))
@pytest.mark.parametrize("backend", ("matplotlib", "plotly"))
def test_plot(metric, backend):
    here = os.path.dirname(__file__)
    filepath = os.path.join(here, "expected/eval_0_bmshj2018-factorized_mse_1.json")
    cmd = [
        "-f",
        filepath,
        "--title",
        "myplot",
        "--metric",
        metric,
        "--backend",
        backend,
    ]
    plot.main(cmd)
